<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        div {
            width: 300px;
            height: 300px;
            border: 1px solid red;
            /* repeating 重复 */
            background: repeating-radial-gradient(red,yellow 10%,green 20%);
            /* background: repeating-linear-gradient(red,yellow 10%,green 20%); */


        }
    </style>

</head>

<body>

    <div>

    </div>


</body>

</html>